Boiler structure



April 5, 1949. J. w. TURNER BOILER STRUCTURE Filed NOV. 20, 1944 2 Sheets-Sheet 1 INVENTOR.

JOHN W TURNER ATTORNEYS April 5, 1949. J. w. TURNER BOILER STRUCTURE 2 Sheets-Sheet 2 Filed Nov. 20, 1944 FIGA.

FIG.5.

FIG.6.

INVENTOR.

JOHN W. TURNER 7 BY I W W M ATTORNEYS Patented Apr. 5, 1949 UNITED STATES PATENT OFFICE BOILER STRUCTURE Application November 20, 1944, Serial No. 564,336

Claims.

This invention relates generally to boiler structures and has for its object, first, to form a structure arranged so the soot and ashes will fall into the firebox when the tubes are cleanedsecond, to arrange the tubes for the passage of the gaseous products of combustion at an oblique angle so as to be readily accessible for cleaning through a side door openingthird, to save manufacturing cost by forming the structure of a minimum of structural elementsfourth, to obtain a construction which is suitable for either a hot water or steam boiler-fifth, to obtain a large steam spacesixth, to provide a boiler which has the advantages of a vertical tube steam boiler but can still be provided with steam space without having any part of the tubes above the water line. With these and other objects in view, the invention consis-ts of the construction as hereinafter set forth.

In the drawings:

Fig. 1 is a front elevation of the boiler;

Fig. 2 is a vertical central longitudinal section on the line 22, Fig. 3;

Fig. 3 is 9, rear elevation of the boiler;

Fig. 4 is a perspective view of the several elements from which the structure is formed, identified by reference characters;

Fig. 5 is a plan view partly in horizontal section on line 55, Fig. 3; and

Fig. 6 is a section on line 5S, Fig. 3.

As shown in Figs. 2 and 3, my improved structure comprises an upright sectional body A having tyo parallel portions A, A constituting opposite sides of the boiler and connected together at the top by a integral arcuate portion A Within the space enclosed by the portions A, A A are pressed sheet metal elements B and B which are parallel to the portions A, A and spaced therefrom. The elements B and B are of similar contour each including a substantially rectangular portion B an obliquely inclined portion B at the upper end of the portion B and a portion B extending forwardly from the portion B At the front, the elements B and B are connected by a plate C which is secured to the forward edge portions of said elements and at the top has a horizontal portion C secured to the lower edges of the portions 13*. There is also at the front a plate element D spaced from the element C and which extends between the portions A, A and A of the element A and is secured thereto. There is also a substantially horizontal flange D at the lower end of the element D which extends to the element C and is secured thereto. The element D has a fire door opening D which is the full width of the space between the elements B and B and is provided with a fire door D Such element D may be either a one piece structure or may be formed from several pieces suitably secured together. Conforming to the contour of the portions B B and B of the elements B and B is an element E extending between said elements B and B and having the vertically extending portion E, the horizontally extending portion E the obliquely inclined portion E and the forwardly extending horizontal portion E the latter being secured at its forward edge to the plate D at the top of the fire door opening therein. A rear element F has a portion F spaced from and parallel to the portion E of the element E; also, an obliquely inclined portion F which is parallel to the portion E of the element E and a vertically extending portion F In rear elevation the contour of the element F conforms to the portions A, A and A of the element A and is secured thereto. Also, at the bottom of the portion F is a substantially horizontally extending flange F which extends and is secured to the portion E of the element E. Extending between the portions E and F of the elements E and F is a plurality of obliquely inclined multiple tube units G, each of which is secured at its opposite ends to said portions E and F and engages apertures formed therein.

The structure as thus far described forms a tubular boiler having water spaces H, H between the portions A, A of the element A and parallel elements B and B; also, a water space H between the elements C and D which communicates at its opposite ends with the water spaces H and 1-1. There is further a water space H between the vertical parallel portions E and F of the elements E and F, which space communicates at its opposite ends with the Water spaces H and H and extends upward between the portions E E and E of the element E, the portions F and F of the element F and the upper portion of the element D. This space also surrounds the multiple tube elements G which extend between the portions E and F To complete the structure ther is a base forming an ash chamber section I.

Above the portion F of the member F and to the right of the portion F (Fig. 2), there is formed within the arch portion A a chamber L for receiving the gaseous products of combustion from the tube units G. To this chamber L are connected laterally extending nipples M and M, one being adapted for connection with the chimney pipe and the other to receive a draft controlling damper. Either or both of the nipples M and M may extend upwardly, obliquely, or in any other suitable direction from the chamber L, as desired. A removable closure L for the chamber L fits within the rear end of the arch portion A being provided at its lower end with a finger L engaging a detent L The space within the water chamber to the left of the portion F (Fig. 2) constitutes a steam chamber. Nipples N and O are connected into the arch portion A to form connections respectively with a steam pipe and a safety valve.

The structure above described comprises generally an outer casing formed by the elements A, D and F and an inner casing or fire box formed :by the elements B, B, C and E. All of these elements are preferably formed from sheet metal blanks, and the inner and outer casings when assembled together with the multiple tube units G form the complete boiler.

The boiler is adapted for use in either a steam or a hot water heating system. In either case the multiple tube units G are always completely I submerged in water so as to avoid any danger of burning out. Such multiple tube units G may be obliquely inclined at any suitable angle, for example, from to 70, to obtain the desired results. If the boiler is used for steam heating, the space within the arch portion A and to the left of the portion F forms a steam chamber with the steam outlet connected to the highest point thereof. The structure is formed of comparatively few parts, all of which are readily formed from sheet metal and, when assembled, may be secured together in any suitable manner to provide water tight joints. A very advantageous feature is the arrangement of the lower ends of the tube units G opposite the fire door opening so that at any time these tubes can be easily cleaned, and so the soot or other material removed during cleaning will drop into the firebox instead of into the smoke box or onto the floor.

What I claim as my invention is:

1. A boiler having a casing formed of a plurality of sheet metal sections including a section forming opposite side walls and an arched top of said casing, a section forming the front wall of said casing and provided with a fuel door opening therein, a section forming the rear wall of the lower portion of said outer casing provided with an obliquely and upwardly extending portion constituting a partition wall within said casing, a plurality of sections forming a rectangular fire box within and spaced from said outer casing to form a surrounding water chamber therebetween, said fire box having an obliquely inclined wall portion parallel to the obliquely extending portion of said rear wall section and a portion connected to said front wall around the door opening therein, a plurality of parallel tubes extending between the oblique portions of said fire box and partition wall connecting the chamber within the fire box to a chamber on one side of said partition wall, a chimney fiue connection to the latter chamber, and a closure for said chamber completing the rear Wall of the outer casing.

2. A boiler formed of a plurality of sheet metal sections including a section forming opposite side walls and an arched top of an outer casing, a section forming the front wall of said outer casing and provided with a fuel door opening therein, a section forming the lower portion of the rear wallof said casing and having an extension with afiat, oblique portion and an upwardly extending flat portion constituting a partition wall within said outer casing, sections forming the sides, front and rear of a rectangular fire box arranged within said outer casing and spaced therefrom to form a water chamber therebetween, the rear wall of said fire box being extended to form the top thereof and having an obliquely extending fiat portion which is parallel with and spaced from the oblique portion of said partition wall, said fire box sections having also forwardly extending portions connected to the front of said outer casing around the fire door opening thereof, a plurality of tubes extending across the space between the oblique portions of said fire box and partition wall to connect the chamber within thefire box with the chamber on one side of said partition wall, one or more nipples extending from the arched top portion of said outer casing, and a removable closure for completing the rear wall of' the outer casing.

3. A boiler formed from a plurality of sheet metal sections including a section forming the opposite side walls and arched top of an outer casing, a section forming the front wall of said casing and provided with a fuel door opening therein, a section forming the rear wall for the lower portion of said outer casing having an extension forming an oblique portion and an upwardly extending portion which form a partition wall between the sides and top of said outer casing, sections forming respectively the front sides and rear of a rectangular fire box positioned within said outer casing and spaced therefrom to form a surrounding water chamber, the rear wall of said fire box being extended to form the top thereof with an obliquely extending portion parallel to but spaced from the oblique portion-of said partition wall, said front sides and top of said fire box being forwardly extended to connect with said front section of the outer casing around the fuel door opening therethrough, a plurality of parallel tubes extending across the space between the oblique portions of said fire box and partition wall and connecting the chamber within the fire box with a chamber on one side of said partition wall, all of said sections being joined to adjacent sections by welding, and a removable closure for completing the rear wall of said outer casing providing access to the upper ends of said tubes.

4. A boiler comprising an outer vertically elongated casing of rectangular cross section having a door located substantially midway between the top and bottom of one side wall thereof, a generally rectangular fire box located in the lower portion of said casing and spaced from the side walls thereof to provide a water jacket surrounding the sides of said fire box, said fire box having a top wall portion extending forwardly horizontally from the rear thereof located substantially in the plane of the bottom of said door for approximately half the distance between the front and rear walls thereof, the front portion of said top wall being inclined upwardly and forwardly from the horizontal portion thereof and being joined to the front wall of said casing substantially at the top of said door, the major portion of said casing above said fire box constituting a water and steam space, and a plurality of fire tubes secured to the inclined portion of the topwall of said fire box and extending upwardly and rearwardly in a direction substantially perpendicular to the inclined portion. of said top wall, whereby said door providesaccess for cleaning all ofsaid tubes by insertion of a, tooltherethrough.

5. A boiler having a casing formed of sheet metal sections comprising a side and top forming section having vertical side portions and a transverse top portion; a front section having a flat vertical portion provided with a door substantially midway between the top and bottom thereof; and a rear section having a flat vertical bottom portion, the upper edge of which terminates substantially in the plane of the top of said door, a forwardly and upwardly inclined portion, the upper edge of which extends to a point substantially midway between the front and rear of said casing, and a flat vertical top portion; a fire box within the lower part of said casing and spaced inwardly from said casing to form a water jacket around said fire box, said fire box having a portion connected to the front section of the casing around said door, and having a top wall including an inclined portion extending downwardly and rearwardly from adjacent the top of said door to a point substantially midway between the front and rear of said casing REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 499,816 Wilson June 20, 1893 FOREIGN PATENTS Number Country Date 17,557 Great Britain Dec. 1, 1888 

